864142354505 has 8 divisors (see below), whose sum is σ = 1037309612424. Its totient is φ = 691088025600.

The previous prime is 864142354487. The next prime is 864142354547. The reversal of 864142354505 is 505453241468.

It can be written as a sum of positive squares in 4 ways, for example, as 224547090496 + 639595264009 = 473864^2 + 799747^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 864142354505 - 2⁶ = 864142354441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 864142354505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28215416 + ... + 28246025.

It is an arithmetic number, because the mean of its divisors is an integer number (129663701553).

Almost surely, 2^864142354505 is an apocalyptic number.

It is an amenable number.

864142354505 is a deficient number, since it is larger than the sum of its proper divisors (173167257919).

864142354505 is a wasteful number, since it uses less digits than its factorization.

864142354505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56464507.

The product of its (nonzero) digits is 2304000, while the sum is 47.

The spelling of 864142354505 in words is "eight hundred sixty-four billion, one hundred forty-two million, three hundred fifty-four thousand, five hundred five".